EP0516472B1 - Distributeur à pompe pour liquides - Google Patents
Distributeur à pompe pour liquides Download PDFInfo
- Publication number
- EP0516472B1 EP0516472B1 EP92304952A EP92304952A EP0516472B1 EP 0516472 B1 EP0516472 B1 EP 0516472B1 EP 92304952 A EP92304952 A EP 92304952A EP 92304952 A EP92304952 A EP 92304952A EP 0516472 B1 EP0516472 B1 EP 0516472B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- piston
- vent
- pump
- valve
- seal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 239000007788 liquid Substances 0.000 title claims description 6
- 238000007789 sealing Methods 0.000 claims description 13
- 230000037452 priming Effects 0.000 claims description 8
- 230000004044 response Effects 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 3
- 230000009969 flowable effect Effects 0.000 claims description 3
- 238000013022 venting Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 230000000994 depressogenic effect Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0062—Outlet valves actuated by the pressure of the fluid to be sprayed
- B05B11/007—Outlet valves actuated by the pressure of the fluid to be sprayed being opened by deformation of a sealing element made of resiliently deformable material, e.g. flaps, skirts, duck-bill valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/0005—Components or details
- B05B11/0037—Containers
- B05B11/0039—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means
- B05B11/0044—Containers associated with means for compensating the pressure difference between the ambient pressure and the pressure inside the container, e.g. pressure relief means compensating underpressure by ingress of atmospheric air into the container, i.e. with venting means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1004—Piston pumps comprising a movable cylinder and a stationary piston
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1001—Piston pumps
- B05B11/1015—Piston pumps actuated without substantial movement of the nozzle in the direction of the pressure stroke
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1061—Pump priming means
- B05B11/1063—Air exhausted from the pump chamber being discharged into the container during priming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B11/00—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use
- B05B11/01—Single-unit hand-held apparatus in which flow of contents is produced by the muscular force of the operator at the moment of use characterised by the means producing the flow
- B05B11/10—Pump arrangements for transferring the contents from the container to a pump chamber by a sucking effect and forcing the contents out through the dispensing nozzle
- B05B11/1042—Components or details
- B05B11/1066—Pump inlet valves
- B05B11/1067—Pump inlet valves actuated by pressure
Definitions
- This invention relates to a liquid pump dispenser having a minimum of constituent parts and including a stationary spout, a stationary piston, container venting and pump priming features, and an inlet/discharge valve housing. More particularly, such dispenser is of the throttle pump variety having a positive leakproof vent control.
- a liquid pump dispenser disclosed in U.S. Patent No. 4,402,432 having a pump priming feature and a positive container vent control for a pump of the pressure built-up variety having a reciprocable plunger defining a variable volume pump chamber with a fixed piston, and requiring a plunger head slidable relative to the plunger for controlling the discharge in response to accumulation of pressure within the pump chamber.
- the discharge passage reciprocates with the plunger head.
- This invention provides a liquid pump dispenser comprising a pump body mountable in a fluid tight manner to a container of a flowable product to be dispensed, the pump body having a relatively reciprocable piston/cylinder-arrangement defining a variable volume pump chamber having a valve controlled inlet within the body, and a stationary spout on said pump body defining a discharge passage from said pump chamber; wherein the pump body has an upstanding stationary pump piston, a manually reciprocable spring biased plunger head has a plunger skirt in sealing engagement with said piston, said skirt providing a cylinder defining with the piston the variable volume pump chamber, a discharge valve acts between said pump chamber and said discharge passage, an annular sleeve on the body surrounds said piston in spaced relationship therewith and defines a vent chamber openable to the atmosphere, the body has means defining a vent passage extending from said vent chamber into the container, an annular vent seal on said plunger skirt is in sealing engagement with an inner wall of said sleeve for sealing said vent chamber closed in an upper position of
- the pump dispenser may have a pump chamber priming feature, and a combined inlet valve and discharge valve housing located within the valve body for defining the valve control inlet and the discharge valving.
- the pump dispenser according to the invention is generally designated 10 in Figures 1 and 2 and is of the throttle pump variety given that once primed, product under pressure is discharged from the pump chamber upon plunger reciprocation via an open discharge valve without reliance on pressure build-up causing plunger shifting to open the discharge.
- the dispenser comprises a pump body 11 which includes a closure cap 12 for threading onto the neck of a container (not shown) of flowable product to be dispensed.
- the cap may, of course, be otherwise snapped into place onto the container neck.
- the pump body further includes a part 13 fixed as at 14 to the closure cap and having a transversely extending stationary spout 15 defining a discharge passage 16 terminating in a discharge orifice 17 located in a conventional orifice cup 18.
- Part 13 further includes a fixed upstanding piston 19, and a surrounding annular sleeve 21 spaced from the piston to therewith define an annular vent chamber 22.
- the vent chamber communicates with the interior of the container via a vent opening 23 located in part 13 and a vent opening 24 located in transverse wall 25 of the closure cap.
- a plunger head 26 has a finger engageable crown 27 and is mounted on part 13 for axial reciprocation against the force of a coil return spring 28 extending between the underside of crown 27 and a transverse wall 29 of part 13.
- the plunger has a depending plunger skirt 31 sealingly mounted on piston seal 20 of the piston for therewith defining a variable volume pump chamber 32.
- the plunger skirt terminates in an annular deformable vent seal 33 in sealing engagement with inner wall 34 of sleeve 21.
- the plunger has an outer skirt 35 terminating in a stop shoulder or rib 36 cooperating with a mating stop shoulder or rib 37 on a shroud cover 38 fixed to the pump body as at 39. Upward movement of the plunger head is therefore positively limited by the interengagement of ribs 36 and 37 which are designed not to sealingly engage but to provide communication between the atmosphere and the underside of the plunger head.
- Vent chamber 22 when opened, communicates with the atmosphere via ribs 36 and 37.
- vent seal 33 sealingly engages wall 34 of sleeve 21.
- vent seal 33 contacts a vent rib 41 located on wall 34 near the bottom of the vent chamber.
- the vent seal is deformed inwardly such that its seal with wall 34 is broken, thereby opening the vent chamber from the atmoshpere into the interior of the container to thereby replenish the dispensed product with air to avoid hydraulic lock and container collapse during the pump pressure stroke.
- a priming rib 42 is located on inner wall 43 of plunger skirt 31 near the upper end thereof. Any accummulated air in pump chamber 28 is thus expelled during the initial downstroke or downstrokes of the plunger as priming rib 42 contacts resilient piston seal 20 on the piston thereby causing the piston seal to deform to establish communication with vent chamber 22.
- vent seal 33 is deformed by vent rib 41 such that any unwanted air is purged from the pump chamber either to the atmosphere via the vent chamber or into the container via vent openings 23 and 24.
- a combined inlet and discharge valve housing 45 is disposed within the pump body and is connected to wall 25 as at 46.
- the housing includes an inlet valve seat 47 and an inlet ball check valve 48 engaging the seat.
- the housing suspends a dip tube 49 extending into the container, and has tiny projections 51 defining a ball cage for the inlet valve.
- a discharge valve 52 Located between the pump chamber and discharge passage 16 is a discharge valve 52 in the form of a deformable annular valve seal in sealing engagement with a circular valve seat 53 defining an inner wall of the pump body into which discharge passage 16 terminates.
- the discharge valve may be secured to or otherwise made integral with housing 45 and may be located at or near the upper end of the housing.
- the discharge valve seal inwardly deforms radially in response to an increase in pressure within the pump chamber during plunger reciprocation to thereby open the discharge for expelling product under pressure through the discharge passage.
- vent rib is disclosed as a means for breaking the vent seal
- other means could be provided within the scope of the invention.
- a vent groove could be provided, a vent opening could be devised such that the vent seal is caused to slide therealong, or the lower end of wall 34 could have an enlarged diameter.
- vent groove could be substituted for priming rib 42 without departing from the invention.
- inlet valves other than a ball check valve could be provided within the scope of the invention.
Landscapes
- Closures For Containers (AREA)
- Containers And Packaging Bodies Having A Special Means To Remove Contents (AREA)
- Reciprocating Pumps (AREA)
Claims (7)
- Distributeur à pompe pour liquide, comprenant un corps de pompe (11) pouvant être monté d'une manière étanche aux fluides sur un récipient contenant un produit apte à s'écouler, qui doit être distribué, le corps de pompe contenant un ensemble à piston/cylindre déplaçables à va-et-vient l'un par rapport à l'autre (19,31) définissant une chambre de pompe (32) à volume variable présentant une entrée (47) commandée par une soupape et située à l'intérieur du corps, et un tube de décharge fixe (15) situé dans ledit corps de pompe et définissant un passage de refoulement (16) à partir de ladite chambre de pompe;
caractérisé en ce que :
le corps de pompe (32) contient un piston de pompe fixe vertical (19),
une tête de plongeur (26) déplaçable manuellement à va-et-vient et sollicitée par un ressort comporte une jupe (31) s'appliquant d'une manière étanche contre ledit piston (19), ladite jupe formant un cylindre définissant, avec le piston, la chambre de pompe à volume variable,
une soupape de refoulement (52) agit entre ladite chambre de pompe et ledit passage de refoulement,
un manchon annulaire (21) prévu dans le corps entoure ledit piston tout en en étant espacé et définit une chambre d'évent (22) pouvant être relié à l'atmosphère, le corps comporte des moyens définissant un passage d'évent (23,24) qui s'étend depuis ladite chambre d'évent jusque dans le récipient,
un joint d'étanchéité annulaire (33) de la chambre d'évent, disposé sur ladite jupe du plongeur s'applique d'une manière étanche contre une paroi intérieure (34) dudit manchon pour maintenir l'étanchéité de ladite chambre d'évent fermée de façon étanche lorsque ladite tête de plongeur est dans une position haute par rapport audit piston,
et des moyens (41) sont prévus sur ladite paroi intérieure pour supprimer le contact étanche entre ledit joint d'étanchéité d'évent et ladite paroi intérieure lorsque ladite tête de plongeur est dans une position abaissée par rapport audit piston, pour relier l'intérieur du récipient à l'atmosphère. - Distributeur selon la revendication 1, caractérisé en ce que des moyens (42) sont prévus sur une paroi intérieure (43) de ladite jupe de piston pour supprimer l'engagement étanche de ladite jupe de piston avec ledit piston lorsque ladite tête de plongeur est dans la position abaissée, et établir une communication entre ladite chambre de pompe (32) et ladite chambre d'évent (22) afin de refouler tout air indésirable de ladite chambre de pompe pendant le déplacement à va-et-vient de la tête de plongeur.
- Distributeur selon la revendication 2, caractérisé en ce que ledit piston (19) comporte un joint d'étanchéité (20), et en ce que lesdits moyens prévus sur ladite paroi intérieure (31) de ladite jupe compriment une nervure d'amorçage (42) calculée pour déformer ledit joint d'étanchéité de piston.
- Distributeur selon l'une quelconque des revendications 1 à 3, caractérisé en ce que lesdits moyens prévus sur ladite paroi intérieure dudit manchon comprennent une nervure de mise à l'atmosphère (41) calculée pour déformer ledit joint d'étanchéité d'évent (33) de la jupe.
- Distributeur selon la revendication 1 ou 2, caractérisé en ce que ledit corps (11) contient un siège de soupape circulaire (53) situé entre ladite chambre de pompe (32) et ledit passage de refoulement (16), ladite vanne de refoulement comprenant un joint annulaire d'étanchéité déformable de soupape (52) s'appliquant de façon étanche contre ledit siège et se déformant en s'écartant radialement dudit siège en réponse à un accroissement de la pression à l'intérieur de ladite chambre de pompe.
- Distributeur selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'un boîtier combiné (45) pour la soupape d'entrée et la soupape de refoulement est disposé à l'intérieur dudit corps de soupape (11) de manière à définir ladite entrée commandée de la soupape et ladite soupape de refoulement (47,48).
- Distributeur selon la revendication 6, caractérisé en ce que ledit corps contient un siège de soupape circulaire (53) situé entre ladite chambre de pompe et ledit passage de refoulement, ladite soupape de refoulement comprenant un joint de soupape annulaire déformable (52) situé dans ledit boîtier, ledit joint de soupape s'appliquant d'une manière étanche contre ledit siège et se déformant radialement en s'écartant dudit siège en réponse à un accroissement de la pression dans ladite chambre de pompe.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/708,377 US5181635A (en) | 1991-05-31 | 1991-05-31 | Liquid pump dispenser having a stationary spout |
US708377 | 1991-05-31 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0516472A1 EP0516472A1 (fr) | 1992-12-02 |
EP0516472B1 true EP0516472B1 (fr) | 1995-07-19 |
Family
ID=24845566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP92304952A Expired - Lifetime EP0516472B1 (fr) | 1991-05-31 | 1992-05-29 | Distributeur à pompe pour liquides |
Country Status (9)
Country | Link |
---|---|
US (1) | US5181635A (fr) |
EP (1) | EP0516472B1 (fr) |
JP (1) | JP2622795B2 (fr) |
AU (1) | AU647925B2 (fr) |
CA (1) | CA2070080C (fr) |
DE (1) | DE69203536T2 (fr) |
ES (1) | ES2074826T3 (fr) |
HK (1) | HK186495A (fr) |
MX (1) | MX9202588A (fr) |
Families Citing this family (31)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2699835B1 (fr) * | 1992-12-28 | 1995-03-31 | Oreal | Ensemble pour la pulvérisation d'un liquide comportant une pompe à précompression. |
US6004720A (en) | 1993-12-28 | 1999-12-21 | Fujitsu Limited | Radiation sensitive material and method for forming pattern |
FR2721285B1 (fr) * | 1994-06-20 | 1996-08-02 | Oreal | Pompe manuelle à précompression pour la pulvérisation d'un liquide et ensemble de distribution équipé d'une telle pompe. |
US5425477A (en) * | 1994-06-29 | 1995-06-20 | Monturas, S.A. | Pump sprayer with stationary discharge |
US5425476A (en) * | 1994-06-29 | 1995-06-20 | Monturas S.A. | Pump sprayer with stationary discharge |
FR2727162B1 (fr) * | 1994-11-23 | 1996-12-20 | Oreal | Pompe manuelle a precompression pour la pulverisation d'un liquide et ensemble de distribution equipe d'une telle pompe |
CA2184849A1 (fr) * | 1995-09-27 | 1997-03-28 | Donald D. Foster | Distributeur de liquide avec pulverisateur a gachette |
US6050457A (en) * | 1995-12-06 | 2000-04-18 | The Procter & Gamble Company | High pressure manually-actuated spray pump |
DE19622124A1 (de) * | 1996-06-01 | 1997-12-04 | Alfred Von Schuckmann | Gerät zum Aufbringen von Flüssigkeiten |
US5829640A (en) * | 1996-09-06 | 1998-11-03 | The Procter & Gamble Company | Dispensing pump |
US5738250A (en) * | 1997-04-07 | 1998-04-14 | Calmar Inc. | Liquid dispensing pump having water seal |
US6006949A (en) * | 1998-01-12 | 1999-12-28 | Continental Sprayers International, Inc. | Manually operated reciprocating liquid pump with sealing vent opening |
FR2779129B1 (fr) * | 1998-05-26 | 2000-08-18 | Sofab | Diffuseur de produits liquides sous forme d'aerosols |
NL1011479C2 (nl) * | 1999-03-06 | 2002-04-23 | Afa Polytek Bv | Doseerinrichting en werkwijze voor het vormen daarvan. |
US6364172B1 (en) | 1998-12-10 | 2002-04-02 | Afa Polytek, B.V. | Liquid dispenser and assembly methods therefor |
TW442432B (en) * | 1998-12-10 | 2001-06-23 | Afa Polytek Bv | Liquid dispenser and assembly methods therefor |
ES2161198B1 (es) | 2000-05-16 | 2002-07-01 | Calmar Monturas Sa | Bomba con dispositivo de descompresion. |
WO2004056490A1 (fr) * | 2002-12-20 | 2004-07-08 | Saint-Gobain Calmar S.A. | Distributeur a conduite d'aeration protegee |
FR2879567B1 (fr) * | 2004-12-17 | 2007-01-26 | Seriplast Sa Sa | Flacon en matiere synthetique equipe d'une pompe |
US20080202556A1 (en) * | 2006-10-23 | 2008-08-28 | Pivonka Nicholas L | One-Handed Method of Cleaning Surfaces |
US7871217B2 (en) * | 2006-12-12 | 2011-01-18 | The Clorox Company | Pump systems for pump dispensers |
US20080138143A1 (en) * | 2006-12-12 | 2008-06-12 | O'connell Tami | Fluid Dispensing Systems For Pump Dispenser for Use With Substrates |
US7980777B2 (en) * | 2007-01-09 | 2011-07-19 | The Clorox Company | Fluid dispensing system with separate pump actuator and dispensing pad |
US20080273915A1 (en) * | 2007-05-01 | 2008-11-06 | O'connell Tami | Sensory Cue For Pump Dispenser For Use With Substrates |
US20080314925A1 (en) * | 2007-06-25 | 2008-12-25 | Timothy Kennedy | Gravity-Flow Liquid Drain-Back System for a Dispensing Package |
US7726517B2 (en) * | 2007-06-27 | 2010-06-01 | The Clorox Company | Liquid draw-back system for a dispensing package |
US7712633B2 (en) * | 2007-07-02 | 2010-05-11 | The Clorox Company | Through-pump liquid drain-back system for a dispensing package |
US20090101676A1 (en) * | 2007-10-22 | 2009-04-23 | O'connell Tami | Pump Dispenser With Indented Actuator Skirt |
DE202010011248U1 (de) * | 2010-08-08 | 2011-09-01 | Anton Brugger | Dosierspender |
USD717666S1 (en) | 2014-03-14 | 2014-11-18 | The Clorox Company | Fluid dispenser |
CN106185011A (zh) * | 2016-07-11 | 2016-12-07 | 无限极(中国)有限公司 | 一种按压泵头和瓶子 |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2149670A5 (fr) * | 1971-08-19 | 1973-03-30 | Step | |
US3759426A (en) * | 1972-09-08 | 1973-09-18 | N Kane | Manually-operated liquid dispenser |
AU471702B2 (en) * | 1973-06-26 | 1976-04-29 | Precision Valve Australia Pty. Limited | Pump |
US4046292A (en) * | 1976-08-31 | 1977-09-06 | Corsette Douglas Frank | Manual container mounted pump |
US4050613A (en) * | 1976-08-31 | 1977-09-27 | Corsette Douglas Frank | Manual actuated dispensing pump |
US4225063A (en) * | 1977-06-10 | 1980-09-30 | Ayres John E | Fluid dispensing pump assembly |
US4218198A (en) * | 1978-11-02 | 1980-08-19 | Security Plastics, Inc. | Pump having non-throttling peripheral valve |
US4227628A (en) * | 1979-02-23 | 1980-10-14 | Parsons Frederick L | Fluid dispensing pump having axially deformable valve |
US4402432A (en) * | 1980-02-13 | 1983-09-06 | Corsette Douglas Frank | Leak-proof dispensing pump |
US4396132A (en) * | 1981-08-14 | 1983-08-02 | Christensen Kurt K | Apparatus and process for removing and dispensing liquid from a receptacle |
US4410107A (en) * | 1981-12-18 | 1983-10-18 | Corsette Douglas Frank | Liquid dispensing pump |
GB2134152B (en) * | 1983-01-22 | 1986-05-08 | Kayes Engineering Limited | Improvements in and relating to impact-action self-propelled mechanism for driving holes in the earth |
US4747523A (en) * | 1987-06-19 | 1988-05-31 | Calmar, Inc. | Manually actuated dispensing pump |
FR2632359B1 (fr) * | 1988-06-06 | 1990-09-07 | Step Soc Tech Pulverisation | Dispositif d'amorcage pour pompe-doseuse a precompression |
EP0470111A1 (fr) * | 1989-04-27 | 1992-02-12 | Jiri Dipl.-Ing. Hodek | Pompe a piston differentiel a double effet |
-
1991
- 1991-05-31 US US07/708,377 patent/US5181635A/en not_active Expired - Fee Related
-
1992
- 1992-05-29 DE DE69203536T patent/DE69203536T2/de not_active Expired - Fee Related
- 1992-05-29 EP EP92304952A patent/EP0516472B1/fr not_active Expired - Lifetime
- 1992-05-29 AU AU17312/92A patent/AU647925B2/en not_active Ceased
- 1992-05-29 ES ES92304952T patent/ES2074826T3/es not_active Expired - Lifetime
- 1992-05-29 MX MX9202588A patent/MX9202588A/es not_active IP Right Cessation
- 1992-05-29 CA CA002070080A patent/CA2070080C/fr not_active Expired - Fee Related
- 1992-06-01 JP JP4165350A patent/JP2622795B2/ja not_active Expired - Lifetime
-
1995
- 1995-12-07 HK HK186495A patent/HK186495A/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
JPH05192613A (ja) | 1993-08-03 |
AU1731292A (en) | 1992-12-03 |
JP2622795B2 (ja) | 1997-06-18 |
AU647925B2 (en) | 1994-03-31 |
CA2070080A1 (fr) | 1992-12-01 |
DE69203536D1 (de) | 1995-08-24 |
ES2074826T3 (es) | 1995-09-16 |
CA2070080C (fr) | 1999-04-13 |
US5181635A (en) | 1993-01-26 |
DE69203536T2 (de) | 1996-01-11 |
MX9202588A (es) | 1993-01-01 |
EP0516472A1 (fr) | 1992-12-02 |
HK186495A (en) | 1995-12-15 |
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